论文标题
电子电子相关性在超快单电离动力学中的影响
The impact of electron-electron correlation in ultrafast attosecond single ionization dynamics
论文作者
论文摘要
到目前为止，相关的两种或多电子系统相关的超快电离动力学已主要解决了原子系统。在单电离的情况下，众所周知，电子 - 电子相关性会改变单个活动电子图像以外的电离动力学和可观察物，从而产生诸如螺旋螺旋效应或改进/向上和敲击/下降/下降过程之类的效果。在这里，我们通过研究涉及相关的两电子动力学以及非绝热核动力学的分子系统的触觉电离来扩展这些工作。使用两个不同结合的电子，强烈和一个弱结合的电子，使用电荷转移分子模型系统，我们区分导致电离的不同途径，无论是直接电离还是电离，涉及弹性和无弹性电子散射过程。我们发现，不同的途径会导致母分子离子的电子群体差异，而后者又涉及不同时间尺度上随后的（非绝热）后离子化动力学。
The attosecond ultrafast ionization dynamics of correlated two- or many-electron systems have, so far, been mainly addressed investigating atomic systems. In the case of single ionization, it is well known that electron-electron correlation modifies the ionization dynamics and observables beyond the single active electron picture, resulting in effects such as the Auger effect or shake-up/down and knock-up/down processes. Here, we extend these works by investigating the attosecond ionization of a molecular system involving correlated two-electron dynamics, as well as non-adiabatic nuclear dynamics. Employing a charge-transfer molecular model system with two differently bound electrons, a strongly and a weakly bound electron, we distinguish different pathways leading to ionization, be it direct ionization or ionization involving elastic and inelastic electron scattering processes. We find that different pathways result in a difference in the electronic population of the parent molecular ion, which, in turn, involves different subsequent (non-adiabatic) postionization dynamics on different time scales.
